The Figure Below Shows Revenue and Cost Curves of a Natural

Multiple Choice

The figure below shows revenue and cost curves of a natural monopoly firm.Figure 14.1
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In the figure,
D: Demand curve
MR: Marginal revenue curve
MC: Marginal cost curve
ATC: Average total cost curve
-Which of the following calculations is necessary to determine whether a regulation should be implemented?

A) Marginal cost-marginal revenue calculations
B) Cost effectiveness calculations
C) Total cost-total revenue calculations
D) Cost minimization calculations
E) Cost-benefit calculations